Caused by: ognl.NoSuchPropertyException: org.springframework.webflow.engine.impl.RequestControlContextImpl - junit4

Question

I'm kind of new to Spring Web Flow, My application uses Spring web flow version 2.0 and I've just started trying to implement some unit testing into my application(had no previous unit testing). This is my simple flow.
<?xml version="1.0" encoding="UTF-8"?>
<flow xmlns="http://www.springframework.org/schema/webflow"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.springframework.org/schema/webflow
http://www.springframework.org/schema/webflow/spring-webflow-2.0.xsd"
abstract="false" start-state="isDynamicMenu" >
<action-state id="isDynamicMenu">
<evaluate expression="menuMakerTestAction.isDynamicMenu" result="res"/>
<transition on="yes" to="setDynamicMenu"/>
<transition on="no" to="setCommonMenu"/>
</action-state>
<view-state id="setDynamicMenu" />
<view-state id="setCommonMenu" />
</flow>
and this is the test code:
public class FlowTest1 extends AbstractXmlFlowExecutionTests {
private MenuMakerTestAction menuMakerTestAction;
protected void setUp() {
menuMakerTestAction = mock(MenuMakerTestAction.class);
}
#Override
protected FlowDefinitionResource getResource(
FlowDefinitionResourceFactory resourceFactory) {
FlowDefinitionResource resource = resourceFactory
.createResource("classpath:spring-webflow/config/menuMakerTest.xml");
Assert.notNull(resource);
return resource;
}
#Override
protected void configureFlowBuilderContext(
MockFlowBuilderContext builderContext) {
builderContext.registerBean("menuMakerTestAction", menuMakerTestAction);
}
#Test
public void testFlow() throws GlobalException {
MutableAttributeMap attrMap = new LocalAttributeMap();
attrMap.put("res", "no");
MockExternalContext context = new MockExternalContext();
startFlow(attrMap, context);
assertCurrentStateEquals("setCommonMenu");
}
}
And this is the error I am getting:
org.springframework.webflow.execution.ActionExecutionException: Exception thrown executing [AnnotatedAction#12f1bf0 targetAction = [EvaluateAction#1797795 expression = menuMakerTestAction.isDynamicMenu, resultExposer = [ActionResultExposer#19a0203 result = res, resultType = [null]]], attributes = map[[empty]]] in state 'isDynamicMenu' of flow 'menuMakerTest' -- action execution attributes were 'map[[empty]]'
at org.springframework.webflow.execution.ActionExecutor.execute(ActionExecutor.java:60)
at org.springframework.webflow.engine.ActionState.doEnter(ActionState.java:101)
at org.springframework.webflow.engine.State.enter(State.java:194)
at org.springframework.webflow.engine.Flow.start(Flow.java:535)
at org.springframework.webflow.engine.impl.FlowExecutionImpl.start(FlowExecutionImpl.java:350)
at org.springframework.webflow.engine.impl.FlowExecutionImpl.start(FlowExecutionImpl.java:221)
at org.springframework.webflow.test.execution.AbstractFlowExecutionTests.startFlow(AbstractFlowExecutionTests.java:123)
at ivr.latam.icg.view.menu.FlowTest1.testFlow(FlowTest1.java:71)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:585)
at junit.framework.TestCase.runTest(TestCase.java:176)
at junit.framework.TestCase.runBare(TestCase.java:141)
at junit.framework.TestResult$1.protect(TestResult.java:122)
at junit.framework.TestResult.runProtected(TestResult.java:142)
at junit.framework.TestResult.run(TestResult.java:125)
at junit.framework.TestCase.run(TestCase.java:129)
at junit.framework.TestSuite.runTest(TestSuite.java:255)
at junit.framework.TestSuite.run(TestSuite.java:250)
at org.junit.internal.runners.JUnit38ClassRunner.run(JUnit38ClassRunner.java:84)
at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:50)
at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197)
Caused by: org.springframework.binding.expression.PropertyNotFoundException: Property 'menuMakerTestAction.isDynamicMenu' not found on context of class [org.springframework.webflow.engine.impl.RequestControlContextImpl]
at org.springframework.binding.expression.ognl.OgnlExpression.getValue(OgnlExpression.java:87)
at org.springframework.webflow.action.EvaluateAction.doExecute(EvaluateAction.java:77)
at org.springframework.webflow.action.AbstractAction.execute(AbstractAction.java:188)
at org.springframework.webflow.execution.AnnotatedAction.execute(AnnotatedAction.java:145)
at org.springframework.webflow.execution.ActionExecutor.execute(ActionExecutor.java:51)
... 26 more
Caused by: ognl.NoSuchPropertyException: com.view.action.config.MenuMakerTestAction$$EnhancerByMockitoWithCGLIB$$9f5b5273.isDynamicMenu
at ognl.ObjectPropertyAccessor.getProperty(ObjectPropertyAccessor.java:122)
at ognl.OgnlRuntime.getProperty(OgnlRuntime.java:1657)
at ognl.ASTProperty.getValueBody(ASTProperty.java:92)
at ognl.SimpleNode.evaluateGetValueBody(SimpleNode.java:170)
at ognl.SimpleNode.getValue(SimpleNode.java:210)
at ognl.ASTChain.getValueBody(ASTChain.java:109)
at ognl.SimpleNode.evaluateGetValueBody(SimpleNode.java:170)
at ognl.SimpleNode.getValue(SimpleNode.java:210)
at ognl.Ognl.getValue(Ognl.java:333)
at org.springframework.binding.expression.ognl.OgnlExpression.getValue(OgnlExpression.java:85)
... 30 more
Its my first time posting in a forum. I can't get past this. The method isDynamicMenu receives nothing at all, and returns just a string. Any help would really be appreciated.
Thanks!

Answer 1

SWF will not implicitly find Your "menuMakerTestAction" bean or any Spring bean registered to the application context. However, SWF will automatically register service classes (annotated with #Service,#Component) inside of SWF. (note: you can also call static methods from SWF)
So you must either:
A. explicitly initialize the menuMakerTestAction inside the flow definition
B. use a service method/static call to lookup the menuMakerTestAction bean
so if you have a service called myService then you can use myService.getMyMenuMakerTestAction() inside the evaluate expression in the flow.
or
Call a static method like such Printing log from flow.xml
also make sure:
"isDynamicMenu" is actually the attribute name on the class (and not the 'get' method name)